As a stream slows down, which sediments are deposited first—large ones or small ones?

Which of the following conditions would cause an increase in the glomerular filtration rate?

a) constriction of the afferent arteriole

b) constriction of the efferent arteriole

c) decrease in systemic blood pressure

d) decrease in aldosterone and ADH production

Which statement best describes sediments deposited by the ice in glaciers and rivers? (1) Glacial deposits and river sediments are both sorted into layers (2) Glacial deposits are sorted into layers, while river sediments are unsorted. (3) Glacial deposits by ice are unsorted and river sediments are sorted into layers. (4) Glacial deposits and river sediments are both unsorted and not layered

At which letters is deposition most likely taking place? (1) $X$, only (2) $Y$, only $Z$, only (4) $X$ and $Y$, but not $Z$

The rock particles in the diagram below were nearly the same shape when they were dropped into a fast-flowing stream. They are all the same kind of rock. They were later taken from the stream at different places downstream. Which rock was recovered from a location closest to where they were dropped into the stream?

Taughannock Creek transports most of its sediment load in occasional floods. Which diagram below best represents sediments deposited in the lake by flood events.

The nitrogen cycle relies on various organisms carrying out very specific functions. One vital group is the nitrogen-fixing bacteria. Which of the following explains how the nitrogen cycle would be disrupted if there were a sudden population explosion of nitrogen-fixing bacteria?

a. A population explosion of nitrogen-fixing bacteria would lead to a decrease in ammonium levels in the water.

b. A population explosion of nitrogen-fixing bacteria would cause dissolved nitrogen levels in the water to increase.

c. A population explosion of nitrogen-fixing bacteria would cause dissolved oxygen and dissolved carbon dioxide levels to decrease.

d. A population explosion of nitrogen-fixing bacteria would cause ammonia levels to rise, which can be detected by testing the ammonia levels in the water.

Why does the creek deposit sediments in the lake? (1) Large waves on the lake cause deposition. (2) The creek slows as water enters the lake. (3) The sediments becomewaterlogged. (4) Water stirs up pebbles on the bottom of the lake

Water flows in a horizontal pipe that is narrow but then widens and the speed of the water becomes less. The pressure in the water moving in the pipe is (a) greater in the wide part. (b) greater in the narrow part. (c) the same in both parts. (d) greater where the speed is higher. (e) greater where the speed is lower.

A sheet of water passing over a waterfall is thicker near the top than near the bottom. Similarly, a stream of water emerging from a water faucet becomes narrower as it falls. Explain.

A steady stream of water falls straight down from a pipe. As- sume the flow is incompressible; the flow is similar to earlier Fig. How does the pressure in the water vary with height in the falling stream? $\quad(A)$ The pressure in the water is higher at lower points in the stream. $\quad(B)$ The pressure in the water is lower at lower points in the stream. $\quad(C)$ The pressure in the water is the same at all points in the stream.

Identify a wave that speeds up when it passes from air to water as well as one that slows down.

Water slows down when it reaches (permeable/impermeable) material.

A stream becomes a river as it moves down gradient. Give the sequence in the evolution of a stream: (a) meandering pattern, (b) rapids, (c) delta.